Para Hydroxy Benzoic Acid, Brand Name : Shengxiao Chemical

Basic information
product number: sx1001
chemical name: 4-hydroxybenzoic acid
molecular formula:c7h6o3
molecular weight:138.12
cas no. :99-96-7
einecs no. :202-804-9
physical and chemical properties
molecular weight: 138�13
density: 1�443gcm3
melting point: 213-214�
boiling point:336.2â°c at 760 mmhg
flash point:171.3â°c
appearance: white powdery crystal, no odor and taste.
Solubility: easily soluble in hot water, alcohol, ether, and acetone, slightly soluble in cold water and benzene, insoluble in carbon disulfide.
detailed description
quality standard: qsh 005-2014
appearance white crystalline powder
content (dry basis) % 99.0 min.
Melting point (degree celsius) 214-217
odor: no odor
solubility : clear and transparent
drying loss % 0.50 max.
Color (pt-co) 40 max.
Ash content % 0.15 max.
Sulfate (so42-) % 0.05 max.
Chloride (cl-) % 0.02 max.
Phenol % 0.10 max.
Salicylic acid % 0.10 max.
4-hydroxyisophthalic acid ppm 500 max
methanol-insoluble matters ppm 50max
potasium (k+) ppm 5
sodium (na+) ppm 5 max
iron (fe) ppm 5max
calcium+magnesium (ca2++mg2+)ppm 10 max
application
the product can be used as preservative, dye, pharmaceutical and injection intermediate. It is main raw material of liquid crystal polymer and raw material of pesticide intermediate.
Packing
double-layer plastic woven bag, net weight is 25kg, or pp bag, net weight is 500kgbag or 1000kgbag.